Medicare Supplement

Medigap Skipped Your Pills? Add Part D Before Day 63

# Original Medicare plus Medigap plus Part D: how the three pieces fit in…

If you're turning 65 in Huntsville and piecing together your Medicare coverage, here's a detail that trips up a lot of people: a Medigap policy — no matter how comprehensive — does not pay for your prescription drugs at the pharmacy counter. That's a separate purchase, and the clock on signing up starts sooner than you might think.

Huntsville sits in Madison County, where retirees weighing Original Medicare often pair it with a Medigap policy to help with hospital and doctor costs. But drugs are their own lane. Miss the timing on a stand-alone Part D plan, and you could carry a late enrollment penalty for as long as you have Medicare.

How the three pieces work together

Think of your coverage as a stack of three layers.

Original Medicare (Parts A and B) is the foundation. Part A helps pay for hospital stays; Part B helps pay for doctor visits, outpatient care, and durable medical equipment. It's run by the federal government and works with any provider nationwide that accepts Medicare.

A Medigap policy (also called Medicare Supplement Insurance) is sold by private insurers and helps pay some of what Original Medicare doesn't — things like coinsurance, copayments, and the Part A deductible. Medigap plans are standardized by letter (Plan G, Plan N, and so on), which means the benefits of a given letter plan are the same from carrier to carrier.

A stand-alone Part D plan covers prescription drugs. It's also sold by private insurers, but it's a separate purchase from your Medigap policy. You cannot buy drug coverage as a rider on Medigap. If you want prescription coverage alongside Original Medicare and Medigap, you enroll in a Part D plan on your own.

Why Medigap doesn't touch your prescriptions

This surprises a lot of new enrollees. Before 2006, some older Medigap policies did include drug coverage. When Part D launched, that changed. Today, every Medigap policy sold is drug-free by design — the drug benefit was moved into Part D so it could be standardized under one program.

That means if your only coverage is Original Medicare plus Medigap, and you walk into a Huntsville pharmacy for a prescription, you'll likely pay full price unless you also have a Part D plan or other creditable drug coverage (from an employer, union, or the VA, for example).

The timing that keeps you out of the late penalty

Here's the part worth circling on the calendar.

Your Initial Enrollment Period for Part D is the seven-month window around your 65th birthday — the three months before, your birthday month, and the three months after. Sign up during that window and you're fine.

If you skip Part D at 65 because you have other creditable drug coverage (say, from an employer plan while you're still working), you get 63 days after that coverage ends to sign up for Part D without penalty. Miss that 63-day window, and Medicare can charge a late enrollment penalty for every month you went without creditable drug coverage. That penalty gets added to your monthly Part D premium — permanently, for as long as you have Medicare.

The math is small per month but adds up over years. It's the kind of avoidable cost that stings most when you didn't know the rule existed.

What Part D looks like in 2026

A few program-level numbers to keep in mind:

• The maximum Part D deductible is $615 for 2026. Plans can set a lower deductible or none at all, but none can set it higher.
• There's a new $2,100 annual out-of-pocket cap on covered prescriptions. Once you hit that, you pay $0 for the rest of the year on covered drugs.
• The old "donut hole" coverage gap was eliminated in 2025, so Part D now has three phases instead of four.
• The Medicare Prescription Payment Plan lets you spread your drug costs across the calendar year in monthly payments — a helpful option if a big pharmacy bill hits in January.
• Higher-income enrollees may pay an IRMAA surcharge on top of their Part D premium. For a single filer in 2026, IRMAA starts above $109,000 in income.

Enrollment windows to know

• Initial Enrollment Period: the seven months around your 65th birthday.
• Annual Enrollment Period: October 15 through December 7 each year, when anyone with Medicare can join, drop, or switch a Part D plan for the following year.
• Medicare Advantage Open Enrollment: January 1 through March 31, which mostly applies to people already in Advantage plans, not to Original Medicare + Medigap + Part D setups.

If you're in the Original Medicare + Medigap + Part D lane, the fall Annual Enrollment Period is your main chance each year to review or change your drug plan as formularies and premiums shift.

Where Huntsville residents can get help

Choosing a Part D plan comes down to your specific medications, your preferred pharmacy, and how a plan's formulary treats each drug. That's personal — and it's exactly the kind of decision worth walking through with someone neutral.

Alabama's State Health Insurance Assistance Program (SHIP) offers free one-on-one Medicare counseling and doesn't sell anything. You can also use the Plan Finder tool at medicare.gov to compare drug plans side by side using your actual prescription list.